I accidentally witness my stepbrother spanking himself while he is in a state of a solo porno and decide to teach him about sex acts

The next time what I saw shocked me – my stepbrother was masturbating, his rather large cock moving up and down. I followed in, sliding my lips around him, sucking him in fully. His loud groans echoed in the room as he continued pounding on me unfairly, much to my delight as he orgabed inside me.